It just does not make sense to carry a sword (swords in this case since it breaks into 4) AND carry your real weapon.

You would be forever changing job from PLD to your carried weapons class. If you were not in a resting zone you would be on perpetual cool down!

Adventurers would cease to exist! The very foundation of NPCs daily lives (fetch quests) would collapse! Eorzean society would turn itself inside out!!!

Please ... think of the miqo'te children (that will be introduced in 3.0) ... they will inherit this world one day, make sure its a good world.